Open end ratchet wrench

Details Open end ratchet wrench Open end ratchet wrench

1982-06-11

1984-04-10

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 582, B25B 1346, B25B 1300

Patent

active

044413874

ABSTRACT:
An open ended ratchet wrench comprising a wrenching disc having a radially disposed open ended nut recess, carrying pivoting tongue ratchet pawls, the disc held between two jaws with ratchet teeth engaged by the pawls. One of the jaws is pivotally retractable for installation and removal of the interchangeable wrenching disc. The handle carrying the jaws may be installed upon or removed from the disc regardless of the position of the nut recess and either laterally or longitudinally in respect to the nut. According to one aspect of the invention, a retractable jaw is pivotally connected to the handle and retained by matching notches in the jaw and the handle. The jaw pivot pin carries an eccentric cam which acts against an appropriately shaped perforation in the retractable jaw to disengage the notches.

REFERENCES:
patent: 663421 (1900-12-01), Daniels
patent: 697321 (1902-04-01), Brown
patent: 1088716 (1914-03-01), Monaghan
patent: 2757564 (1956-08-01), Reaves

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